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fix: simplify handling useJsonWireFormat=true and fix onlyTypes=true #583

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Jun 3, 2022
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8 changes: 1 addition & 7 deletions README.markdown
Original file line number Diff line number Diff line change
Expand Up @@ -396,7 +396,7 @@ Generated code will be placed in the Gradle build directory.

- With `--ts_proto_opt=onlyTypes=true`, only types will be emitted, and imports for `long` and `protobufjs/minimal` will be excluded.

Note: _This is a combination_ of `outputJsonMethods=false,outputEncodeMethods=false,outputClientImpl=false,nestJs=false`
This implies `outputJsonMethods=false,outputEncodeMethods=false,outputClientImpl=false,nestJs=false`

- With `--ts_proto_opt=usePrototypeForDefaults=true`, the generated code will wrap new objects with `Object.create`.

Expand All @@ -411,12 +411,6 @@ Generated code will be placed in the Gradle build directory.
Requires `onlyTypes=true`. Implies `useDate=string` and `stringEnums=true`. This option is to generate types that can be directly used with marshalling/unmarshalling Protobuf messages serialized as JSON.
You may also want to set `useOptionals=all`, as gRPC gateways are not required to send default value for scalar values.

### Only Types

If you're looking for `ts-proto` to generate only types for your Protobuf types then passing all three of `outputEncodeMethods`, `outputJsonMethods`, and `outputClientImpl` as `false` is probably what you want, i.e.:

`--ts_proto_opt=onlyTypes=true`.

### NestJS Support

We have a great way of working together with [nestjs](https://docs.nestjs.com/microservices/grpc). `ts-proto` generates `interfaces` and `decorators` for you controller, client. For more information see the [nestjs readme](NESTJS.markdown).
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9 changes: 4 additions & 5 deletions src/enums.ts
Original file line number Diff line number Diff line change
Expand Up @@ -27,20 +27,19 @@ export function generateEnum(
}

const delimiter = options.enumsAsLiterals ? ':' : '=';
const stringEnums = options.stringEnums || (options.onlyTypes && options.useJsonWireFormat);

enumDesc.value.forEach((valueDesc, index) => {
const info = sourceInfo.lookup(Fields.enum.value, index);
maybeAddComment(info, chunks, valueDesc.options?.deprecated, `${valueDesc.name} - `);
chunks.push(
code`${valueDesc.name} ${delimiter} ${stringEnums ? `"${valueDesc.name}"` : valueDesc.number.toString()},`
code`${valueDesc.name} ${delimiter} ${options.stringEnums ? `"${valueDesc.name}"` : valueDesc.number.toString()},`
);
});

if (options.unrecognizedEnum)
chunks.push(code`
${UNRECOGNIZED_ENUM_NAME} ${delimiter} ${
stringEnums ? `"${UNRECOGNIZED_ENUM_NAME}"` : UNRECOGNIZED_ENUM_VALUE.toString()
options.stringEnums ? `"${UNRECOGNIZED_ENUM_NAME}"` : UNRECOGNIZED_ENUM_VALUE.toString()
},`);

if (options.enumsAsLiterals) {
Expand All @@ -51,15 +50,15 @@ export function generateEnum(
chunks.push(code`}`);
}

if (options.outputJsonMethods || (stringEnums && options.outputEncodeMethods)) {
if (options.outputJsonMethods || (options.stringEnums && options.outputEncodeMethods)) {
chunks.push(code`\n`);
chunks.push(generateEnumFromJson(ctx, fullName, enumDesc));
}
if (options.outputJsonMethods) {
chunks.push(code`\n`);
chunks.push(generateEnumToJson(ctx, fullName, enumDesc));
}
if (stringEnums && options.outputEncodeMethods) {
if (options.stringEnums && options.outputEncodeMethods) {
chunks.push(code`\n`);
chunks.push(generateEnumToNumber(ctx, fullName, enumDesc));
}
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26 changes: 23 additions & 3 deletions src/options.ts
Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,6 @@ export type Options = {
unrecognizedEnum: boolean;
exportCommonSymbols: boolean;
outputSchema: boolean;
// An alias of !output
onlyTypes: boolean;
emitImportedFiles: boolean;
useExactTypes: boolean;
Expand Down Expand Up @@ -124,8 +123,18 @@ export function optionsFromParameter(parameter: string | undefined): Options {
}
Object.assign(options, parsed);
}
// We should promote onlyTypes to its own documented flag, but just an alias for now
if (!options.outputJsonMethods && !options.outputEncodeMethods && !options.outputClientImpl && !options.nestJs) {
// onlyTypes=true implies outputJsonMethods=false,outputEncodeMethods=false,outputClientImpl=false,nestJs=false
if (options.onlyTypes) {
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...huh, yeah, not sure why we weren't doing this before. Great fix!

If you want to add test cases to options-test.ts to make sure these don't regress, that'd be great!

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This should probably have been fixed when the option was documented. :)

I'll add test cases!

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Tests added.

options.outputJsonMethods = false;
options.outputEncodeMethods = false;
options.outputClientImpl = false;
options.nestJs = false;
} else if (
!options.outputJsonMethods &&
!options.outputEncodeMethods &&
!options.outputClientImpl &&
!options.nestJs
) {
options.onlyTypes = true;
}

Expand Down Expand Up @@ -164,6 +173,17 @@ export function optionsFromParameter(parameter: string | undefined): Options {
options.snakeToCamel = [options.snakeToCamel];
}

if (options.useJsonWireFormat) {
if (!options.onlyTypes) {
// useJsonWireFormat requires onlyTypes=true
options.useJsonWireFormat = false;
} else {
// useJsonWireFormat implies stringEnums=true and useDate=string
options.stringEnums = true;
options.useDate = DateOption.STRING;
}
}

return options;
}

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13 changes: 8 additions & 5 deletions src/types.ts
Original file line number Diff line number Diff line change
Expand Up @@ -462,7 +462,6 @@ export function isEmptyType(typeName: string): boolean {
}

export function valueTypeName(ctx: Context, typeName: string): Code | undefined {
const useJsonWireFormat = ctx.options.onlyTypes && ctx.options.useJsonWireFormat;
switch (typeName) {
case '.google.protobuf.StringValue':
return code`string`;
Expand All @@ -478,19 +477,23 @@ export function valueTypeName(ctx: Context, typeName: string): Code | undefined
case '.google.protobuf.BoolValue':
return code`boolean`;
case '.google.protobuf.BytesValue':
return ctx.options.env === EnvOption.NODE ? code`Buffer` : useJsonWireFormat ? code`string` : code`Uint8Array`;
return ctx.options.env === EnvOption.NODE
? code`Buffer`
: ctx.options.useJsonWireFormat
? code`string`
: code`Uint8Array`;
case '.google.protobuf.ListValue':
return code`Array<any>`;
case '.google.protobuf.Value':
return code`any`;
case '.google.protobuf.Struct':
return code`{[key: string]: any}`;
case '.google.protobuf.FieldMask':
return useJsonWireFormat ? code`string` : code`string[]`;
return ctx.options.useJsonWireFormat ? code`string` : code`string[]`;
case '.google.protobuf.Duration':
return useJsonWireFormat ? code`string` : undefined;
return ctx.options.useJsonWireFormat ? code`string` : undefined;
case '.google.protobuf.Timestamp':
return useJsonWireFormat ? code`string` : undefined;
return ctx.options.useJsonWireFormat ? code`string` : undefined;
default:
return undefined;
}
Expand Down